Fountain pen



Aprn 6 ,'1926. 1,580,093

' H. J. UPTQN FOUNTAIN PEN Filed June 11, 1925 which may then vbe permitte p latented Apr. 6,1926.

UNITED STATES PATENT* omer..

yHENRY J. UPTON, OF WEST MEDFOBD, MASSACHUSETTS, ASSIGNOB TO CHILTONv PEN COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

FOUNTAIN PEN.'

Application led June 11,

`threaded onto the holder and seats against the end of the pen section, so that the in the patent La France No. 1528379,"in which a metal inner tube is Aprovided which encloses the sack and on which a section of the outer barrel is slidably mounted, so arranged that the air may be temporarily confined within said section and the section vmay be slid on the tube, so as to raise the air pressure therein and colla se the sack, to expand and become filled with ink, while the pen section is immersed therein.

While the construction' of said rior patent contains various important a vantages, it has been found, in the form illustrated, to have certain objectionable features in that, when the pen was not in use, and was, for example, being removed from the pocket by grasping the cap, the outer barrel section was liable to slip on the metal inner tube, so that it would have to be pushed' back in lace, and in pushing it back there was anger of 'closing the air vent, so as to cause the sack to be coinpressed sufliciently to expel some of the ink therein. The displacement of the movable barrel section was also liable to take )lace while removin the cap, if the user happened to grasp t e slidable barrel section, instead of the barrel section which extends beyond the cap and is fixed to the portion on which the ca is threaded.`

To prevent the liability of displacement of the slidable barrel section when the pen was not in use, or its parts were in the nonleakable position, means were later devised, whereby, after the filling operation had been performed, said section could be locked with relation to the cap or the pen portion to which it was attached when en closing the pen section, but the speclic 1925. `Serial No. 38,814. 1

means produced was not entirely satisfactory in that it was necessary to turn the slidable barrel section on the metal tube to lock it relatively thereto, thereby involving a similar unlocking movement befolr: the section could be drawn out on the tu the fil ing operation.

The objects of the present invention vare to provide an im roved construction, whereby the slidable rrel section will be lplcked to all otherpaits of the pen, when arts are in the non-leakable position, sot at relative displacement thereof will be impossible, and `whereby the necessity of grasping the pen barrel at any particular point, when unscrewing the cap, will be avoided. g

I accomplish these objects byY means of theconstruction hereinafter vdescribed and illustrated in the accompanying drawing, in which:

Fig. 1 is a central longitudinal section of a fountain pen showing an embodiment of my invention.

Figs. 2 and 3 are similar views, respectivel showing the positions ofthe at t e beginning and at the end o sack collapsing operation.

Figs. 4, 5 and 6 are detail views of different parts of the pen.

Fig. 7 is a sectional view of a modified form of the invention.

As shown in the drawing, the pen section 1 is of common form and has a cylindrical portion 2 at its inner en'd, from which the neck portion 3 extends, the latter being adapted to receive the mouth of the rubber sack 4, which is drawn thereover, so as to form a ti ht connection therewith. A barrel section 5 1s provided, into the outer end of. which -the portion 2 of the pen section is fitted, forming an air tight connection therewith and into the inner end portion of which one end portion of a thinY tube 6, preferably of metal, is tightly litted, and, in order thatthe connection therebetween may be rigid and practically permanent, minute projections or prongs 6 are forced out beyond the surface of the tube, asA indicated in Figs. 3 and 4, which slightly penetrate the inner surface of the section 5. Gther means for making this connection permanent mav be'employed, but this means as been foun to be inexpensive reliminary to. the performance ofarts the y SIS TitiA and practical. The outer surfaces of the pen and barrel sections are continuous and form a finger hold when the pen is in use, the pen section being removable from the barrel section to permit renewal of the ink sack. The opposite portion of the tube 6 from the pen section is extended to or beyond the opposite end of the ink sack, and completely encloses the same, the end thereof being open.

A barrel section 7 is provided, which is slidably mounted on the tube 6 and has a practically air tight connection therewith, in all positions thereon, said barrel section being slidable into engagement with the adjacent end of the section 5 and its end ortion next the section 5 being of slig itly greater external diameter than that of the adjacent portion of the latter, or of any portion of the pen section. An external screw thread 8 is formed on the end por tion of the section 7, next the section 5, which is adapted to receive the internal thread of the cap 9, said cap being provided with an internal shoulder 9', arranged to seat against the end of the pen section, when the cap has been screwed onto the section 7 to a suflicient extent. The cap and the slidable barrel section 7 are thus secured to ether and the pen section 1 and barrel section 5 are clamped therebetween, and incidentally the pen in the discharge end of the pen section is enclosed in an ink tight chamber, as shown in Fig. 1. The bore of the cap beyond its shoulder 9' is of slightly greater diameter than the external diameter of any portion of the pen section or the section 5, so that, when the cap is placed in position on the adjacent end of section 7, 1t will not engage either Section 1 or 5, except where it seats against the end of the pen section, so that, when the cap is unscrewed, there will be no tendency to displace either section with relation to the barrel section 7.

A screw plug 10 is removably threaded in the op osite end of the section 7, so as to close t e same, said plug having a normally open vent passage 11 therethrough, the outer end of which is flared to permit read closing of the passage by pressing the ger thereon, as shown in Fig. 3. The screw plug is employed primarily as a matter of convenience in manufacture.

A spring finger 12 is formed from the metal of the tube, or is otherwise secured thereto adjacent its open end, opposite the pen section, said finger being adapted. to engage an annular internal shoulder 13 formed in the barrel section 7, adjacent its opposite end, when the section has been lratwn out on the tube 6 to its fullest `exen When not in use, the parts will be in the position of Fig. 1, in which position any pull on either the cap or the section 7, will be resisted by the other. For example, if the section 7 is set into a pocket clip, 1t may be pulled therefrom by pulllng on the cap, and if the cap is provided with a clip which en ages the pocket the section will be supporte by the cap.

Also if it is desired to use the pen, the cap' may be unscrewed by grasping the barrel section 7 at any point beyond the end of the cap, and, in doing this, there will be no tendency to displace the section 7 on the metal tube 6. The cap is also adapted to be placed on the opposite end of the section 7, when the pen is in use, as 1s customary. n

The filling operation will be performed 1n precisely the same manner as that described in said prior patent. That is, after the cap has been removed, the section 7 will be drawn out on the tube 6 to the position of Fig. 2, in which position the spring linger 12 will engage the shoulder 13 and prevent further movement in this direction. Then, by holding the section 5 in one hand and pressing a finger of the other hand against the end of the plug 10, so as to close the vent passage 11, and then pressing the section 7 down on the tube 6, the air within the section 7 will be compressed, collapsing the sack, as shown in Fig. 3. The pen section will then be dipped into the ink and the compressed air will be liberated permitting the sack to expand and become filled with ink.

With the above described construction the pen section 1 and relatively fixed barrel section 5 together, or separately, provide a smooth finger hold, when the pen is in use, which is unmarred by the thread for securing the cap, with which one or the other has previously beenr provided, this thread in the present construction being located above the portion which is naturally grasped by the writer.

My invention may be variously modified without departing from the spirit thereof, another form thereof being illustrated in Fig. 7, in which a construction is shown which omits the part corresponding to the finger-hold section 5. In this form a pen section 15 is provided ont suiicient length and dlameter to provide a suitable finger hold when writing. At its inner end, it is provided with a screw threaded cylindrical portion 16 of reduced diameter, fbrming a shoulder 16', and the tube 17, corresponding to tube 6, is screwed thereon into abutment with the shoulder 16'. Beyond the portion 16, the section is provided with the usual neck 18, to which the ink sack 19 is connected in the usual manner. The barrel 20 is slidably mounted on the tube 17 in the same manner as the section 7 previously described, and its pen section end is arranged l to abut with theshoulder 16. The adjacent portion of the barrel isv provided with an external screw thread 21 to receive the cap 22, as before described,1the cap seatingv in,

renewed, the tube 17 `must be` unscrewed Y I from the pen section, while, in the previadjacent end portion of the barrel, -said capI ously described construction, the pen section is withdrawn from the endfof .the tube, as.

1 y tion having a resilient link sack attached to indicated in F ig', 6. I claim:

1. A fountain pen comprising 'a'YPe/DY. ses s lwith saidl pen section, ak finger holdl section tion having a resilient ink vsack connected to its inner end, a tube enclosing said sack andehaviig an` air tight connection with said pen section at one end, the opposite lend of said tube being op en, 'a barrel .section mounted on said tube and havingan: air ti ht slidable connectiontherewith, rthe end o said barrel section oppo'sitethe penseetion being normally open and adaptedgtofbe closed to confinethe. air therein, and' aficapA o l I of` saidhbarrel section vbeing normally open and adapted'tobe closed to confine the air' adapted to enclose the pen section and rthe and the enclosed end portion 'of the'barrel having inter-engaging lmeans for attaching one'to the other.

2. A fountain pen comprisinga pen sec` tion having a resilient inkl sack connectedto its inner end, a tube enclosing said sack hav-v ing an air tight connection with said -pen section at one end and being open at-its opposite end, a barrel section mounted on'said tube-y and having an air tight slidable connection permitting movement thereof between an abutting position with ysaid `pen section and aV position in'which it is nearly withdrawn from the tube, the end of said barrel section opposite the' pen section being -normally' open and adapted to be temporarily closed to confine the vair therein'z and a. cap adapted to enclose said pen section and the adjacentI end portion of said barrel section,

said cap having an internal shoulder ar- Aisis ranged to. seat against the outer `end of' the pen section and said cap and the portion of the barrel section enclosed thereby being cor-v respondingly screw threaded to secure them together and seat the'cap against the pen section.`

3. A fountain pen com rising a pen section having a resilient in sack attached to the inner end thereof, a tube enclosing said sack and having -an air tight connection with said pen section, a finger hold section mounted on said tube and abutting-at one end with said pen section, a barrel section mounted on said tube-and having a slidable air tight connection therewith and movable thereon between a normal position in which it encloses said tube and abuts at one end with the opposite end of said finger, hold section and a position in which it is nearly withdrawn from the tube, the opposite end of said barrel section being normally open and adapted to "be closed to confine the airv therein, anda cap enclosing said pen section,

said finger hold section and the adjacent portion of said barrel section, a threaded connection with the enclosed same thereto and toseat the cap against .sa-idf barrel section'.v

4. A `fountain pen comprising a pen ysecthe inner end thereof, a tube enclosing said sack' and having an air tight connection it'encloses said tube and abuts at oneend and havinr portion of said barrel section to connect the with` the oppositeend of said iinger hold section and a position in which it is nearly withdrawn from .the tube, the opposite end thereilfiidy 'aca enclosing said pen section,

ysaidhiii'iger hol vsection andthe adjacent portion o fsaid barrel section, thev enclosin portion of said cap "being of greaterr interna diameter than the diameter of either said pen section or said finger hold section, 'and saidV cap havingy any internal seat arranged to engage, theend'fof saidpeii section and an internalserew thread connection with the portion of' encloses'. y

'5; A fountain pen Vcomprising a linger hold section, a pen section fitted within one end thereof, a resilient inkfsack connected said barrel Vsection which itto theinner end of said pen section, a tube enclosing said `inlt'sack and having one end portionl iitted within said finger. hold section and rigidly connected thereto and having vits opposite end open, a barrel section mounte on vand'. havingl an air tight slidable connection with said tube permitting movement,thereonr between a position in whichone end of the section abuts with said finger hold section anda position in which'l it is nearly withdrawn from .-'the tube, the opposite end of said barrel section being normall openand adapted to be closed to 'con e the airtherein, and its end portion next the finger hold section having an externally threaded portion and a cap adapted to be threaded thereon and to enclose the pen and finger hold sections.

6. A fountain pen comprising a pen section `having a resilient ink sack connected to the inner end thereof, a tube enclosing said sack and open at one end and having 'an air tight connection at its opposite end izo with the inner end of'said pen section, a

having an air tight, slidable connection an internal threaded connection with the therewith permitting movement between a adjacent end portion of said barrel section position in which one end engages said pen and an internal shoulder at the inner end of section and a position nearly Withdrawn said portion for engaging the end of said therefrom, the opposite end of said barrel pen section to clamp the same between the 15 section being normally open and adapted cap andthe barrel section.

to be closed to confine the air therein, and In testimony whereof I have Signed my a cap having one end portion adapted to name to this speccation.

enclose said pen section Without substantial 10 frictional engagement therewith, and having HENRY J. UPTON. 

